This is a brief technical jargon excerpt from wikipedia in regards to the properties in the video:

Weightlessness, or an absence of ‘weight’, is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces from floors, seats, beds, scales, and the like. Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless. This is also termed “zero-g” where the term is more correctly understood as meaning “zero g-force.”

When the gravitational field is non-uniform, a body in free fall suffers tidal effects and is not stress-free. Near a black hole, such tidal effects can be very strong. In the case of the Earth, the effects are minor, especially on objects of relatively small dimension (such as the human body or a spacecraft) and the overall sensation of weightlessness in these cases is preserved. This condition is known asmicrogravity and it prevails in orbiting spacecraft.

We hope you like this bizarre video!